java中各种时间格式的转化

http://www.chinaitpower.com/A/2005-01-14/104881.html 使用java.util.Calendar返回间隔天数

 

      static int getDaysBetween (java.util.Calendar d1, java.util.Calendar d2) {

          if (d1.after(d2)) {  // swap dates so that d1 is start and d2 is end

              java.util.Calendar swap = d1;

              d1 = d2;

              d2 = swap;

          }

          int days = d2.get(java.util.Calendar.DAY_OF_YEAR) -

                     d1.get(java.util.Calendar.DAY_OF_YEAR);

          int y2 = d2.get(java.util.Calendar.YEAR);

          if (d1.get(java.util.Calendar.YEAR) != y2) {

              d1 = (java.util.Calendar) d1.clone();

              do {

                  days += d1.getActualMaximum(java.util.Calendar.DAY_OF_YEAR);

                  d1.add(java.util.Calendar.YEAR, 1);

              } while (d1.get(java.util.Calendar.YEAR) != y2);

          }

          return days;

      }

 

 

 

 

 

 

java中各种时间格式的转化